Sectional sash-weight.



J. M. CORNELL.

SEOTIONAL SASH WEIGHT. APPLICATION FILED JUNE 19, 1909.

Patented May 10,1916.

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JOHN III. CORNELL, OF PHILLIPSTOWN, NEW YORK.

SECTIONAL SASH-WEIG-HT.

Specification of Letters Patent.

Patented May 10, 1910.

Application filed June 19, 1909. Serial No. 503,143.

To all whom it may concern:

Be it known that 1, JOHN M. CORNELL, a citizen of the United States of America, and a resident of Phillipstown, Putnam county, in the State of New York, have invented a new and useful Improvement in Sectional SaslrWeights, of which the following is a specification.

This invention relates to those sectional sash weights, the successive sections or units of which are self-attaching and locked in against accidental lateral displacement relative to each other. Various constructions of such weights and their units have heretofore been proposed.

The present invention consists in certain novel combinations of parts and novel features of construction, and in a sectional sash weight and a unit therefor embodying such combinations and features or any of them, as hereinafter particularly described and claimed.

The leading object of this invention is to render each depending unit of the improved sash weight securely locked in against lateral displacement without the aid of breakable projections or contracted recesses, and without complicating the construction and operation of the unit.

Another object is to obviate any endwise play between the several units and thus to lessen the strain on the pivotal connections and locking-in devices.

Other objects will be set forth in the general description Which follows.

A. sheet of drawings accompanies this specification as part thereof.

Figures 1, 2 and 3 of these drawings are side views of two units of a sectional sash weight interlocked with each other and constructed according to the present invention; Fig. 4; represents a longitudinal section on the line AB, Fig. 3; Figs. 5 and 6 are end views, showing the respective ends of one of the units; Fig. 7 represents a cross section on the line C-D, Fig. 4; and Figs. 8 and 9 are side views, illustrating the assembling of the units.

Like reference characters refer to like parts in all the figures.

The respective ends of each complete unit of the improved sectional sash weight are constructed as follows: The upper end, as it may be termed with reference to the drawings, is constructed with a central end hook, a, having a normally horizontal notch, 79,

in one edge thereof; the inner end of said notch being in line with the entrance of said notch and suitably rounded, and with a rounded end, 0, forming a locking-in surface, and preferably with a pair of square shoulders, (Z and c, at the sides of the hook at the same distance from said notch as the extreme end of the hook. The other end of the unit is constructed with a central recess, a, matching said hook a and crossed by a cylindrical pin or cross bar, 6, matching said notch Z), and is further constructed with a locking-in portion, 0, within the closed end of said recess, having a concave effective surface arranged to interact with said lockingin surface formed by the rounded end 0 of the hook, and preferably with end surfaces, cZcZ, and ce, corresponding respectively with said shoulders at and c, and forming rounded corners at cl and e, and square corners at c and e. Said lockingin portion 0 is diagonally opposite said rounded corners cl and c; and said closed end of the recess a is preferably and conveniently flat and parallel with the end surfaces of said square corners, d and 0. Otherwise each unit from end to end is preferably and conveniently solid and rectangular in cross section and of any required length. A sufficient number of said units are coupled together, end to end. Two

units are shown respectively at l and 2 throughout the drawings.

As illustrated by Figs. 8 and 9, which see, the section or unit 2 to be attached is held at right angles to the leading unit 1, and is moved verticallyinto engagement as illustrated by the arrow, 1, in Fig. 8. In this movement the notch b engages the cross bar a, and the shoulders (Z and 6 move lengthwise along what may be termed the front of the superjacent unit. The lower unit 2 is then permitted to turn on the cross bar 6 as a fulcrum, as represented by the arrow, 2, in Fig. 9. The hook (4 turns freely around the cross bar Z2, its rounded end 0 turning concentrically in contact with the corresponding locking-in portion 0, until the lower unit drops into line with the upper unit as in Figs. 1 to 4: inclusive. In this arrangement the lowermost unit is moved endwise into engagement with the depending hook of the unit next above, and then allowed to drop into its vertical position. In both arrangements only two movements are required, the second being the pivotal dropping movement, which simplifies the lmally suspended in line with each other,

unlocking of the units to the utmost. At the same time the successive units are securely locked in against accidental separation, and the sectional weight as a whole is rendered substantially solid and continuous from end i to end, which insures maximum heaviness in a given length and lessens the liability to breakage or separation should the weight drop endwise. In the working position of each unit represented by said Figs. 1 to at inclusive the cross bar 6 fits snugly within the rounded end of the notch b, and the back of the rounded end 0 of the hook, forming its locking-in surface, fits against the locking-in portion 0 of the superjacent unit or section, and the square portions (Z and e of the end surfaces of the upper unit contact with the shoulders (Z and e of the lower unit. The weight is thus rendered as nearly solid as practicable from end to end, while the cross bar 6 and the concentric lockingin portion 0 interacting with the hook a at each coupling, prevent any accidental displacement of the hook, and insure a smooth exterior at the coupling or joint as elsewhere.

The recessed end of each unit (a b 0 cl d e 6) may obviously be arranged uppermost, if preferred, so as to render the uppermost cross bar Z) available for attaching the sash cord or chain.

The body of the weight may be round or of any preferred shape in cross section, and other like modifications will suggest themselves to those skilled in the art.

Having thus described said improvement,

I claim as my invention and desire to patent under this specification.

1. A sectional sash weight having, in combination, endwise adjoining members normally suspended in line with each other, one such member being constructed with an end hook having in one side a substantially hori- Zontal notch, the inner end of which is rounded and in line with the entrance of the notch and a locking-in end surface formed by the extremity of the hook, and the adjoining member constructed with an end recess fitted to said hook, a. cylindrical cross bar fitted to said notch, and a locking-in portion within the closed end of said recess constructed and arranged to interact with said locking-in end surface when the weight members are suspended.

2. A sectional sash weight having, in combination, endwise adjoining members norone such member being constructed with an end hook having in one side a substantially horizontal notch the inner end of which is rounded and in line with the entrance of the notch, and a locking-in end surface formed by the extremity of the hook, and the adjoining member constructed with an end recess fitted to said hook, a cylindrical cross bar within said recess fitted to said notch, and a locking-in portion within the closed end of said recess constructed and arranged to interact with said locking-in end surface; said locking-in end surface and the interacting surface of said locking-in portion being concentric with said inner end of the notch and with said cross bar.

3. A sectional-sash-weight unit having at one end a central end hook constructed wit-h a notch in one side the inner end of which is rounded and in line with the entrance of the notch and a locking-in end surface concentric with said rounded end of the notch, and at its other end a central end recess and a cylindrical cross bar within said recess fitted respectively to the like hook and notch of an endwise adjoining unit, and a locking in portion within said recess arranged to interact with a like locking-in end surface of such adjoining unit; the interacting surface of said locking-in portion being concentric with said cross bar.

4. A sectional-sash-weight unit having at one end a pair of square shoulders and between them a central end hook, the latter constructed with a notch in one side parallel to the plane of said shoulders, the inner end of the notch being rounded and in line with the entrance of the notch, and a locking-in end surface, and at its other end with a pair of end surfaces matching said shoulders but forming rounded corners at one side of the weight, a central recess matching said hook, a cylindrical cross bar within said recess matching said notch, and a locking-in portion within said recess matching said locking-in surface; said locking-in end surface being concentric with said rounded end of the notch, and the interacting surface of said locking-in portion and said rounded corners concentric with said cross bar, substantially as hereinbefore specified.

JOHN M. CORNELL,

Witnesses:

W. F. FOWLER, Enw. F. Laws. 

